In isokinetic exercise, what parameter remains constant during movement?

In isokinetic exercise, what parameter remains constant during movement?

• A. Velocity
• B. Torque
• C. Resistance
• D. Time

Answer: (A)

Isokinetic exercise is defined by moving a joint at a set, constant speed through the range of motion. An isokinetic dynamometer holds the angular velocity steady regardless of how much force you apply, so the device automatically adjusts resistance to keep that speed unchanged. Because the machine is always trying to maintain the same velocity, your torque changes throughout the movement depending on how hard you can push at each angle. Time of the exercise isn’t fixed by the machine and resistance isn’t kept constant either—both adjust in response to your effort to preserve the constant speed. So the parameter that stays constant is velocity.

Isokinetic exercise is defined by moving a joint at a set, constant speed through the range of motion. An isokinetic dynamometer holds the angular velocity steady regardless of how much force you apply, so the device automatically adjusts resistance to keep that speed unchanged. Because the machine is always trying to maintain the same velocity, your torque changes throughout the movement depending on how hard you can push at each angle. Time of the exercise isn’t fixed by the machine and resistance isn’t kept constant either—both adjust in response to your effort to preserve the constant speed. So the parameter that stays constant is velocity.